From: Mohammad Khan <mkhan@...>
Date: 2004-11-02T05:34:37+09:00
Subject: Re: Another scrach on head

On Mon, 2004-11-01 at 12:43, Ara.T.Howard@noaa.gov wrote:
> On Tue, 2 Nov 2004, David A. Black wrote:
> 
> > #false? might be useful to avoid lengthier tests distinguishing among
> > various permutations of falsehood.  I can't see too many likely uses
> > for #true?
> 
> i'd really like a #true?
> 
>    yaml = <<-txt
>      options:
>        verbose : true  # or maybe 4
>    txt
> 
>    config = YAML::load yaml
> 
>    options = config['options']
> 
>    if options['verbose'].true?
>      @verbosity = 4
>    else
>      @verbosity = Integer options['verbose']
>    end
> 
> now i use
> 
>    if TrueClass === options['verbose']
>      @verbosity = 4
>    else
>      @verbosity = Integer options['verbose']
>    end
> 
> which is kind of ugly.  espcially where i care if it true OR false and end
> doing
> 
> #
> # foobar can be a bool or a number
> #
>    if [TrueClass, FalseClass].include? options['foobar'].class
>      @foobar = options['foobar']
>    else
>      @foobar = Integer options['foobar']
>    end
> 
> 
> yuk!


Hi Ara,

You can extend Object

class Object
   def true?
       return self == true ? true : false
   end

   def false?
       return self == false? true : false
   end
end

--
Mohammad


> 
> cheers.
> 
> -a
> --
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